lol,i did this on my old lsc's a 89' with 91' interior.had lost one feature which was the fogs,which i really didnt care, had to replace 89 dash and put in the 91 dashboard----lol--- just inorder to close the doors with 91 panels and seats...learned u cant just put seats and panels and expect eveything gonna look good but once we closed the doors..forgetaboutit! after installing carpet,door panels and seats...the dashboard was hitting upagainst the doorpanels when ya close...so everthing had go out and rip the dash out and place it with the 91 dash..whatta job,the set up of your instruments from 89 to 91 is differnt,so rewiring and extending...uhh-just thinkin about it makes my laugh cause how much time it took...lol, but we finshed it all and gave her a custome paint job and had her for 2 yrs no problems! she became one sharpe A$$ Btch and new shoes too for an 89!